Aplousina gigantea Canu & Bassler, 1927,

Judith L Winston, 2016, Bryozoa of Floridan Oculina reefs, Zootaxa 4071 (1), pp. 1-81: 17-19

publication ID

http://doi.org/10.11646/zootaxa.4071.1.1

publication LSID

lsid:zoobank.org:pub:D47C792F-E91D-40A6-ABB7-FA7810578562

persistent identifier

http://treatment.plazi.org/id/19362D2E-2005-FFA2-BBA5-F8C0FBA7FF75

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Plazi

scientific name

Aplousina gigantea Canu & Bassler, 1927
status

 

Aplousina gigantea Canu & Bassler, 1927 

( Fig. 8View FIGURE 8, Table 7)

Aplousina gigantea Canu & Bassler, 1927: 3  ; 1928 a: 20, pl. 2, fig. 6, text-fig. 3; Osburn 1940: 357; Maturo 1957: 38; Shier 1964: 612; Winston 1982: 123, fig. 34.

Material examined. VMNH no. 70606; USNM no. 1283233.

Description. Colonies encrusting on shell or Oculina  rubble ( Fig. 8View FIGURE 8 A –C). Zooids very large, measuring about 0.80 x 1.00 mm, ovoid to hexagonal in shape, almost all of the frontal surface membranous, edged by a narrow low-beaded cryptocystal rim and occasional narrow proximal gymnocyst. Ooecium endozooidal, comprising shallow imperforate cucullate structure ( Fig. 8View FIGURE 8 B, D) formed by extension of the distal zooid wall under proximal gymnocyst and cryptocyst of daughter zooid.

Remarks. The large size of zooids makes it possible to distinguish this species from others encrusting shell substrata, even without magnification.

Distribution. Beaufort, North Carolina to Florida. Eastern Gulf of Mexico.

TABLE 7. Measurements in mm of Aplousina gigantea Canu & Bassler, 1927.

Mean 0.811 0.571 0.726 0.489 0.139 0.194 0.119 0.310
  0.076 0.077 0.079 0.050 0.026 0.017 0.030 0.035
  0.720 0.450 0.612 0.396 0.090 0.180 0.090 0.270
  1.008 0.720 0.936 0.576 0.162 0.234 0.162 0.360